Collapsible bottle



FIG. 1 is a plan view of a collapsible bottle showing my new design;

FIG. 2 is a side elevation view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a perspective view, shown at a reduced scale, showing the collapsible bottle of FIG. 1 in a filled condition; and,

FIG. 6 is a fragmentary perspective view of the base of the bottle of FIG. 5. 

The ornamental design for a collapsible bottle, as shown and described. 